Nat-Gas Prices Fall on Abundant Supplies and Cooler US Weather

October Nymex natural gas prices fell to a three-week low, closing down 1.74% on Friday, primarily due to a larger-than-expected inventory build of 90 bcf for the week ended September 12, which pushed US natural gas inventories 6.3% above their five-year seasonal average. This surplus supply, alongside near-record US production levels and cooler weather forecasts expected to reduce demand for air conditioning, contributed to a bearish market sentiment.

Analysis

October Nymex natural gas futures declined 1.74% to a three-week low, reacting to a confluence of bearish supply and demand fundamentals. The primary catalyst was a larger-than-anticipated inventory build of 90 bcf reported by the EIA, which surpassed both the market consensus of 81 bcf and the five-year average of 74 bcf. This has expanded U.S. natural gas inventories to 6.3% above their five-year seasonal average, signaling an abundant supply environment. This supply-side pressure is exacerbated by near-record domestic production, with lower-48 dry gas output at 107.6 bcf/day (+6.1% y/y) and the EIA recently revising its 2025 production forecast upward. On the demand side, price headwinds are intensified by forecasts for cooler U.S. weather, which is expected to curb gas consumption for power generation. This is corroborated by data showing lower-48 gas demand at 73.1 bcf/day, a 4.6% year-over-year decline. While a modest year-over-year increase in weekly electricity output and stable LNG export flows offer minor support, these factors are currently insufficient to offset the strong bearish sentiment driven by oversupply and weakening short-term demand.

Key Decisions for Investors

• Given the significant inventory surplus and near-record production levels, a cautious or bearish stance on near-term natural gas prices is warranted until a catalyst emerges to rebalance the market.
• Investors should closely monitor upcoming EIA inventory reports and short-term weather forecasts, as these are the primary drivers of current price volatility and market sentiment.
• Pay attention to the widening gap between U.S. production (+6.1% y/y) and domestic demand (-4.6% y/y), as a continuation of this trend will likely exert further downward pressure on prices.